The Toyota Prius has very little repairs needed, I had one from 0 miles to 306,000 miles (sold it still running great) and lifetime total repairs were less than $2,000 parts and labor.In those extreme low milage cases like her we didn't even recommend a hybrid because of the additional costs all around
You absolutely picked the best vehicle type for her 👍 because almost all (non-plugin) hybrids use NIMH batteries: high self-discharge. They also run inefficiently during startup to accelerate catalytic converter heat-up; reducing pollution in exchange for losing some MPG.
So If you don't drive a NIMH Prius twice a week (or at least 8 miles distance), it's going to burn some extra gas to recharge its hybrid battery every trip.
If you wait a month or longer between drives, it can discharge enough to freak out (check engine light) and eventually lose cell balance (requiring external balancing).
Plug-in hybrids such as the Prius Prime have Lithium batteries and don't suffer these effects, since Lithiums maintain their charge for years instead of months.